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Message-Id: <1246474254-10401-2-git-send-email-adkulkar@umail.iu.edu>
Date: Wed, 1 Jul 2009 12:50:54 -0600
From: Abhishek Kulkarni <adkulkar@...il.iu.edu>
To: linux-kernel@...r.kernel.org
Cc: v9fs-developer@...ts.sourceforge.net,
Abhishek Kulkarni <adkulkar@...il.iu.edu>,
netdev@...r.kernel.org
Subject: [9P PATCH 2/2] net/9p: Fix crash due to bad mount parameters.
It is not safe to use match_int without checking the token type returned
by match_token (especially when the token type returned is Opt_err and
args is empty). Fix it.
Signed-off-by: Abhishek Kulkarni <adkulkar@...il.iu.edu>
---
:100644 100644 c613ed08.. b884d98... M net/9p/trans_fd.c
net/9p/trans_fd.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index c613ed0..b884d98 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -731,12 +731,14 @@ static int parse_opts(char *params, struct p9_fd_opts *opts)
if (!*p)
continue;
token = match_token(p, tokens, args);
- r = match_int(&args[0], &option);
- if (r < 0) {
- P9_DPRINTK(P9_DEBUG_ERROR,
- "integer field, but no integer?\n");
- ret = r;
- continue;
+ if (token != Opt_err) {
+ r = match_int(&args[0], &option);
+ if (r < 0) {
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "integer field, but no integer?\n");
+ ret = r;
+ continue;
+ }
}
switch (token) {
case Opt_port:
--
1.6.3.3
--
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